PLT-4776: Fix typo in MFA help text (#4635)

* fix typo

* fix mfa typo

webapp/components/user_settings/user_settings_security.jsx

@@ -289,7 +289,7 @@ export default class SecurityTab extends React.Component {
                     <span>
                         <FormattedMessage
                             id='user.settings.mfa.addHelpQr'
-                            defaultMessage='Please scan the QR code with the Google Authenticator app on your smartphone and fill in the token with one provided by the app. If you are unable to scan the code, you can maunally enter the secret provided.'
+                            defaultMessage='Please scan the QR code with the Google Authenticator app on your smartphone and fill in the token with one provided by the app. If you are unable to scan the code, you can manually enter the secret provided.'
                         />
                     </span>
                 );

webapp/i18n/en.json

@@ -1962,7 +1962,7 @@
   "user.settings.languages.promote": "Select which language Mattermost displays in the user interface.<br /><br />Would like to help with translations? Join the <a href='http://translate.mattermost.com/' target='_blank'>Mattermost Translation Server</a> to contribute.",
   "user.settings.mfa.add": "Add MFA to your account",
   "user.settings.mfa.addHelp": "You can require a smartphone-based token, in addition to your password, to sign into Mattermost.<br/><br/>To enable, download Google Authenticator from <a target='_blank' href='https://itunes.apple.com/us/app/google-authenticator/id388497605?mt=8'>iTunes</a> or <a target='_blank' href='https://play.google.com/store/apps/details?id=com.google.android.apps.authenticator2&hl=en'>Google Play</a> for your phone, then<br/><br/>1. Click the <strong>Add MFA to your account</strong> button above.<br/>2. Use Google Authenticator to scan the QR code that appears or type in the secret manually.<br/>3. Type in the Token generated by Google Authenticator and click <strong>Save</strong>.<br/><br/>When logging in, you will be asked to enter a token from Google Authenticator in addition to your regular credentials.",
-  "user.settings.mfa.addHelpQr": "Please scan the QR code with the Google Authenticator app on your smartphone and fill in the token with one provided by the app. If you are unable to scan the code, you can maunally enter the secret provided.",
+  "user.settings.mfa.addHelpQr": "Please scan the QR code with the Google Authenticator app on your smartphone and fill in the token with one provided by the app. If you are unable to scan the code, you can manually enter the secret provided.",
   "user.settings.mfa.enterToken": "Token (numbers only)",
   "user.settings.mfa.qrCode": "Bar Code",
   "user.settings.mfa.remove": "Remove MFA from your account",